A farmer planted 1890 tomato plants in a field in rows each having 63 plants. A certain type of worm destroyed 18 plants in each row. How many plants did the worm *** in the whole field?
Total number of plants = Number of rows Number of plants
1890 = Number of rows 63
$1890/63$ = Number of rows
Number of rows = 30
Now, number of plants destroyed by worm in 1 row = 18
Total number of plants destroyed by worm in 30 rows = 18 30 = 540